PHYS3C24 Nuclear and Particle Physics

Prerequisites
An introductory course in atomic physics, such as PHYS2B24, and an introductory course in
quantum physics, such as ASTR2B11, PHYS2B22, or their equivalents in other departments.

Aim of the Course

The aim of the course is to provide an introduction to the physical concepts of nuclear and particle physics and the
experimental techniques which they use.

Objectives
After completing the course, students should:

Understand the basic ideas and techniques of the subject, including the description of
reactions in terms of amplitudes and their relation to simple measurable quantities.

Specifically in nuclear physics, students should:

Know the basic phenomena of nuclear physics, including the properties of the nuclear
force, the behaviour of binding energies as a function of mass number, and nuclei shapes
and sizes and how these are determined;

understand the interpretation of binding energies in terms of the semi-empirical mass
formula of the liquid drop model;

know the systematics of nuclear stability and the phenomenology of a , b and g decays
and spontaneous fission;

understand how a wide range of nuclear data, including spins, parities and magnetic
moments, are interpreted in the Fermi gas model, the shell model and the collective
model;

understand the theory of nuclear b -decay;

understand the physics of induced fission, how fission chain reactions occur and how
these may be harnessed to provide sources of power, both controlled and explosive;

understand the physics of nuclear fusion and its role in stellar evolution, and the
difficulties of achieving fusion both in principle and in practice;

Specifically in particle physics, students should:

appreciate the need for antiparticles;

understand the relationship between exchange of particles and the range of forces;

know how to interpret interactions in terms of Feynman diagrams;

know the roles and properties of each of the three families of particles (quarks, leptons
and gauge bosons) of the standard model of particle physics;

know the properties of hadrons and understand their importance as evidence for the quark
model;

understand the principles of the interpretation of the fundamental strong interaction via
quantum chromodynamics (QCD), including the roles of the colour quantum number,
confinement and asymptotic freedom;

understand the evidence for QCD from experiments on jets and nucleon structure;

understand the spin and symmetry structures of the weak interactions and tests of these
from the decays of the m , p and K0 mesons;

understand how unification of the electromagnetic and weak interactions comes about and
the interpretation of the resulting electroweak interaction in the standard model;

Specifically in experimental methods, students should:

Know the principles of a range of particle accelerators used in nuclear and particle
physics;

know the physics of energy losses of particles with mass interacting with matter,
including losses by ionisation, radiation and short range interactions with nuclei, and the
losses incurred by photons;

know the principles of a range of detectors for time resolution, measurements of position,
momentum, energy and particle identification, and how these are combined in modern
experiments.

Methodology and Assessment
The course consists of 30 lectures supplemented by 3 lecture periods for coursework
problems and other matters as they arise. Assessment is based on an unseen written
examination (90%) and the best 4 of 5 coursework problem papers (10%).